The Enviro ET80 A air pump helps to increase oxygen levels through aeration in both hydroponic systems and ponds. Providing a clean oil free air source it is exceptionally quiet in operation, as low as 35dB even when running continuously. With a built in alarm, the ET80 A detects low pressure in the airline with an integral high sounding buzzer and bright LED warning signals. The ET80 A is easy to service with a competitively priced service kit and is also supported by our two year warranty.